Pulp-wood barker.



P. c. ULMEN & A. JOHNSON.

PULP WOOD BARKER.

v APPLICATION FILED 111:0. 29, 1911.

Patented Mar. 19, 1912.

2 SHEETS-SHEET 1.

P. O. ULMBN &'A. JOHNSON.

PULP WOOD BARKER.

APPLIGATION FILED 1:20. 29, 1911.

Patented Mar.19, 1912.

2 SHEETSSHEET 2.

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llllllllllll Cl 1 U PHILIP C. ULMEN AND ALEXANDER JOHNSON, OF NIAGARA, WISCONSIN.

PULP-WOOD BARKER.

Specification of Letters Patent.

Patented Mar. 19, 1912.

Application filed December 29, 1911. Serial No. 668.452.

To all whom it may concern:

Be it known that we, PHILIP C. ULMEN and ALEXANDER JoI-iNsoN, citizens of the United States, and residents of Niagara, in the county of Marinette, in the State of isconsin, have invented certain new and useful Improvements in Pulp WVood Barkers, of which the following is a full and clear specification, reference being had to the accompanying drawings, in which Figure 1 is a side elevation of our improved machine, the belt conveyer being shown in cross section and parts of the hand wheel and frame being broken away; Fig. 2 a plan view of the machine; and Fig. 3 an edge elevation of one of the worm spike wheels.

The object of this invention is to provide asimple apparatus for pressing the log against the knives and rotating it while thus engaged with the knives, means being provided for readily adjusting the log engaging devices to adapt them to operate upon logs of a wide range of diameters and the log rotating devices being so constructed as to oppose the tendency of the log to shift endwisely while being barked.

Similar letters refer to similar parts throughout the several views.

A designates a barking machine of well known construction, in which the knives are arranged radially or tangentially in a large rotating disk, not shown. A horizontal shaft a is mounted in suitable journal bearings and close to the front side of the machine, the shaft being driven in the direction of the arrow shown in Fig. 1 by a belt Z) connecting it to a lower shaft 0, which latter shaft is geared to a main shaft d. The shaft (Z is driven by a driving shaft 0 through the medium of a suitable friction clutch f, this clutch being adapted to be operated in any convenient manner by the operator, so that the rotation of the shaft or may be controlled at will.

Aflixed to the shaft a is a series of spike wheels g, the spikes extending entirely around each wheel and being spirally arranged thereon. An endless belt conveyer h is adapted to run across in front of the barker. parallel to shaft a, and in front of the shaft a this belt is supported, as it travels. by a table 2' which is adapted to be raised and lowered and locked in its adjusted positions by any suitable means. Suitable fingers 7' extend from the edge of this table in between the spike wheels 9 to insure the delivery of the log from the belt upon the spike wheels.

A sliding cross head K: is mounted to slide in ways on the top of the frame of the machine. these ways being inclined downwardly toward the spike wheels 9. This cross head Z: is adapted to be raised and lowered by hand through the medium of the hand wheel Z and a suitable rack and pinion device under the cross head, this rack and pinion device not being shown. Mounted to have a limited sliding movement in this cross head is a pair of rods m whose forward ends are rigidly attached to a yoke n. In the forward ends of the arms of this yoke is a short shaft 0, affixed to which is a pair of spike wheels 7), the sharpened spikes thereon being arranged spirally. Suitable coil springs g surround the rods at between the yoke n and the adjacent end of the cross head 7..

Atlixed to shaft 0 is a gear wheel which meshes with a similar gear a. affixed to the lower end of a shaft t which extends up through the cross piece of the yoke and longitudinally through the cross head It and has its upper portion made angular, at t. The angular portion of this shaft works through a gear a journaled in a bearing o mounted on the franlc, this gear a being driven from the shaft (1 by suitable belt and gearing.

It will be understood that the logs to be barked arc eonvcyml by the belt 71. to a point opposite the spike wheels g]. Upon arrival at that point the operator slides the upper spike wheels 7) downwardly until they engage the log and roll it off the belt onto the spike wheels whereupon the log will be rotated by the spike wheels 7 and the spike wheels 7) and be therebv also pressed against the rotating knives of the barker. At the time the upper spike wheels are brought down upon the log. it is desirable to stop the conveyor belt and suitable means are provided for that purpose. In the present machine we have shown an endless chain or belt (2' depending from the shaft of the hand wheel Z and running over a wheel 7) carried by a shaft 0 suitablv jourhaled in the frame. On the same shaft with this wheel Z) is a wheel I) which is provided with notches 1] in its periphery, and into one of these notches extends the upper end of a lever 0. so that this lever e is pivotallv swung backward and forward bv the partial rotation of the wheel 6'. The lower end of the lever c is connected to a rod f. whose other end is connected to a crank arm g on a horizontal. shaft 7L; and this shaft it is connected by a suitable link i and crank arms to another shaft j, this latter shaft being adapted to open and close a suitable friction clutch 7e embodied in the driving mechanism of the conveyer. .By this mechanism it will. be observed that the act of running down the cross head 7;: will shift the clutch k out of action and vice versa.

A feature of importance lies in arranging the spikes on both the upper and lower spike wheels in, a spiral manner, that is, in the manner of a screw thread or worm, whereby the spikes will. not only serve to engage and rotate the log but will tend to move it endwisely in opposition to the tendency of the rotating knives of the barker to move the logs in the opposite direction.

The adjustability of the table '5 and the upper spike wheels will of course adapt the machine to logs of various sizes, but should logs of greater diameters be barked, a still greater capacity in that respect is obtainable by dividing the frame of the machine into two parts, the joint between the parts inclining downwardly toward the base of the barker, the upper part of the frame being thereby adapted to slide a limited distance upwardly and downwardly on the base part of the frame. This inclined joint in the frame is shown at m in Fig. 1. Suitable means may be employed to slide the upper part of the frame back and forth. e have shown a pair of shafts a connected by a sprocket chain 0 and one of the shafts being provided with anoperating crank 72, the shafts being mounted in the lower section of the frame and being threaded through suitable nuts in the upper sections of the frame or connected thereto in any suitable manner.

To counter-balance the weight of the carriage or cross head 70 and thus render its reciprocation by the operator easy, we attach a weight 9 to the left hand side of the belt a, as shown in dotted lines in Fig. 1. It will be understood that when the wheel Z) is rotated by the action of the belt a far enough to disengage lever c from the notch it happens to rest in, said lever will slip along on the teeth of the wheel and be held lightly thereagainst by the tendency of the clutch shifting connections to return to normal so that when the wheel Z) is again rotated in the opposite direction the lever a will immediately move back into the next adjacent notch in the wheel and be thereby moved in the same direction as the wheel and thus shift the clutch. This construction and operation is desirable or necessary in view of the fact that the carriage 7': is shifted varying distances by reason of the varying diameters of the logs.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is-

1. In a barking machine, the combination with a rotating cutter, of means for holding the log against the cutter embodying a rotating worm supporting the log.

2. In a barking machine, the combination with a rotating cutter, of means for holding the log against the cutter embodying a rotating worm supporting the log, this worm being provided with spikes.

3. In a barking machine, the combination with a rotating cutter head, of means for holding the log against the cutters cmbodying a series of rotating worm spike wheels and also a pair of upper spike wheels adapted to press down on the log the spikes on these upper wheels being arranged spirally.

4. In combination with a barker cutter, of means for holding the log against the cutter and rotating it embodying a frame, a sliding head thereon, spike wheels supported on said head, means for rotating these spike wheels, means for manually sliding said head back and forth, a belt conveyer and means for driving it, and means whereby the act of shifting the said head automatically stops and starts the conveyer.

5. In a barking machine, the combination with a rotating cutter head, of means for supporting and rotating the log, said means embodying a sliding cross head and means for sliding the same back and forth, a belt conveyer and means for driving it, means whereby the act of shifting said cross head automatically stops and-starts the conveyer, said mechanism embodying a driving belt, a notched wheel driven by said driving belt, and a lever adapted to engage in any one of the notches of said wheel.

6. In a barking machine, the combination with a rotating cutter head, of means for supporting and rotating the 10 said means embodying a sliding cross head and means for sliding the same back and forth, a belt conveyer and means for driving it, means whereby the act of shifting said cross head automatically stops and starts the conveyer, said mechanism embodying a driv ing belt, a notched wheel driven by said driving belt, and a lever adapted to engage in any one of the notches of said wheel, said driving belt carrying a counter-weight.

In testimony whereof we hereunto aflix our signatures in the presence of two witnesses this 26 dav of December 1911.

PHILIP C. ULMEN. ALEXANDER JOHNSON. Witnesses Crms. O. MoCUNn, L. H.-1\ ABBEN.

Uopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

